Carrboro, NC has a population of 20,867 and is the 2,075th largest city in the United States. The population density is 3,241 per sq mi which is 1690% higher than the North Carolina average and 3477% higher than the national average. The median age in Carrboro is 31 which is approximately 19% lower than the North Carolina average of 38. In Carrboro, 45% of the population over 15 years of age are married, 79% speak English and 10% speak Spanish. 31% of Carrboro residents were born in North Carolina, 50% were born out of state, 2% were born outside of the United States and 17% were foreign born.